This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
No. I don't think it's possible to really understand boxing and unboxing without understanding wrappers. With autoboxing, you don't need to explicitly refer to wrappers as often as you do without autoboxing - but you do still need to directly refer to wrappers sometimes, and you need to understand how they work.